Yeah, one source. Doesn't change that there's still 300+ flagships faffing about the universe every time a exo-gal wave comes in. I mean, don't get me wrong, a full cap of spire ships can do a lot to flatten
one group of those... but not both (splitting them up just gets both groups worn down faster.), and even with just one flagshipball they'll be getting worn down.
I had one system with... basically everything that ~24 systems worth of knowledge and fabricators (and golems, can't forget the golems) provided in it (plus a good dozen or so varying fleetship constructors on repeat >_>), and another with a full shipcap (~100 or so, total) of FS ships... and they were both getting worn down and/or blown through (also many dozens of dyson gatlings and ~50 roaming enclaves... things were getting silly <_<). 150+ flagships is a
shitload of HP, and unlike a comparative HP ball of less individual HP units (say, most fleetships), they don't ablate
nearly as well (so you're dealing with full damage for much longer and they're much more likely to get individuals through the gauntlet.).
... mostly, though, it's just kinda' silly. Starships and guardians aren't things you're supposed to be seeing in groups of hundreds
Certainly not on a -100% handcap diff 5 AI* and an AIP that's not, like, approaching the thousands (I mean, I've been in a 7 diff game with an AIP >2k, and they still weren't throwing groups like that at us. 2k+ individual waves, sure, but not a fleetship cap worth of starships.). I shudder to think what happens on a more normal difficulty setting. Which would be why I'd recommend not touching FS (/anything involving exo-gal waves) until the next patch
*I wanted to see the end of the FS campaign... and it
not take forever.